Teenage Mutant Ninja Turtles: Mutants Unleashed – Secret Codes For Bonus Costumes

The codes are found in specially marked packages of Ninja Turtle Action Figures, sold both in stores and online. They may or may not be randomized in the packages. There is 1 Casual and 1 Action Figure Costume for each of the 4 turtles that you can unlock in game, which can only be done with the secret codes found in the packages. The codes themselves are not 1 time use, but must be entered in game to redeem them, after which they will be saved with your file in the cloud. There is no known way to unlock these costumes in game despite the code cards clearly stating that they provide early access to the costumes. I have fully completed the game 100% on both the main game, as well as the new game plus mode, and have unlocked nothing, other than the rewards for competing each side quest, such as hats, masks, and graphics filters.

In order to use the secret codes, you must first travel to the Turtles Lair from the Map Screen. From there, you need to access the computer on the left side of the screen against the wall, between the Dojo and Portable Restroom. All codes must be entered exactly as is, in capital letters, with the hyphens, and no spaces, or you will get a “Wrong Code” message.

Michelangelo Skins (Action Figure & Casual)

To change into the costumes, you need to travel to the Co-Existing Center from the map screen. Head up the stairs, and go into the second room. There will be a dressing room on the right side that you can interact with.

The 1987 Cartoon Skins, 1984 Comic Book Skins, and Metal Heads Skins are only available through the Season Pass.

If anybody has the codes for Leonardo and Donatello’s Action Figure Costumes, please share them. I will update the guide if I come across them.